Zobrazeno 1 - 10
of 445
pro vyhledávání: '"O.F. Schirmer"'
Publikováno v:
Physics of the Solid State. 44:1426-1432
A method is outlined by which the parameters governing light-induced charge transfer processes in photorefractive crystals can be determined. The system BaTiO3:Rh is treated as an example. EPR is used to obtain information on the EPR-active defect ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd3e2d071af97153b7d1762e0ebf3715
https://doi.org/10.1134/1.1501331
https://doi.org/10.1134/1.1501331
Publikováno v:
Optical Materials. 18:1-6
A way to elucidate the light-induced charge transfer processes, which lead to refractive index changes in photorefractive materials, is outlined. Using this method, the electron paramagnetic resonance (EPR) information on the chemical identity and st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee4a5aaccc29bf9e05b0ea44c149e0ff
https://doi.org/10.1016/s0925-3467(01)00119-7
https://doi.org/10.1016/s0925-3467(01)00119-7
Light-induced charge transport processes in photorefractive barium titanate crystals doped with iron
Publikováno v:
Applied Physics B. 65:481-487
) are annealed in a hydrogen atmosphere at various temperatures. After these reducing treatments, absorption, light-induced absorption changes, two-beam coupling direction, photo electron paramagnetic resonance (photo EPR), dark and photoconductivity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecb0a2f821ba69e47a86746f7a1727b5
https://doi.org/10.1007/s003400050300
https://doi.org/10.1007/s003400050300
Publikováno v:
Optical Materials. 18:123-125
The light-induced charge transfer in ferroelectric tin hypothiodiphosphate Sn 2 P 2 S 6 is investigated by means of optical absorption and EPR spectroscopy and their combination. Light-induced metastability at 298 K, known to affect the holographic s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bc22136a385c7bec3713553b5f2ba5c
https://doi.org/10.1016/s0925-3467(01)00147-1
https://doi.org/10.1016/s0925-3467(01)00147-1
Publikováno v:
Journal of Crystal Growth. 108:429-432
The optical extinction of blue KNbO 3 in the visible and near infrared was determined by measuring optical transmission and diffuse reflection. Extinction coefficients derived from the first procedure are much larger than those inferred from the seco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6074715e536c0b19cc63f4e27759d630
https://doi.org/10.1016/0022-0248(91)90392-i
https://doi.org/10.1016/0022-0248(91)90392-i
Autor:
O.F. Schirmer, S. Juppe
Publikováno v:
Solid State Communications. 76:299-302
Fe2+ is an important sensitizer of the photorefractive effect of LiNbO3. Thermally detected electron spin resonance at 35 GHz was used to detect this non-Kramers ion and to analyze the properties of its lowest states. ESR is found to be caused by ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0301207ab1e7f36a63b8bb40cc09cffe
https://doi.org/10.1016/0038-1098(90)90841-x
https://doi.org/10.1016/0038-1098(90)90841-x
Autor:
O.F. Schirmer, J. Dirksmeyer
Publikováno v:
Thin Solid Films. 184:55-60
Silicon molecular beam epitaxial layers, doped with As0, where produced and investigated using electron spin resonance (ESR) of As0 and of dangling bonds, appearing in not ideally grown layers. The following features were studied: dependence of stick
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b09fdb357a3d88cc8425abdba76da03
https://doi.org/10.1016/0040-6090(90)90397-v
https://doi.org/10.1016/0040-6090(90)90397-v
Autor:
G. Pauliat, G. Roosen, Daniel Rytz, R. Scharfschwerdt, J.M.C. Jonathan, Nicolas Huot, O.F. Schirmer
Publikováno v:
CLEO/Europe Conference on Lasers and Electro-Optics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::147abbbb847bcab29310e812a3e7f1cb
https://doi.org/10.1109/cleoe.1998.719582
https://doi.org/10.1109/cleoe.1998.719582
Optical absorption bands can be used as fingerprints of defects and their charge states in insulators and semiconductors. On the basis of the photochromicity usually shown by such materials, a method is introduced by which the optical bands are assig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc3528dd4f48878a5dfd18beb55593ae
http://stacks.iop.org/0953-8984/15/415
http://stacks.iop.org/0953-8984/15/415
Publikováno v:
Photorefractive Effects, Materials, and Devices.
The light-induced charge transfer in ferroelectric tin hypothiodiphosphate Sn2P2S6 is investigated by means of optical absorption and electron paramagnetic resonance spectroscopy and their combination. By creating electrons and holes via optical band
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3e2f7e8787024b178e5b0f85b8f7fc5
https://doi.org/10.1364/pemd.2001.568
https://doi.org/10.1364/pemd.2001.568